/// <summary>
/// Insert Content in a MarkupElement after removing the tag
/// </summary>
private void InsertContent(MarkupElement element, string workingMarkup, string close, int pass)
{
int index = workingMarkup.IndexOf(close) + pass;
int length = workingMarkup.Length - index;
if (index > -1 && (length + index) <= workingMarkup.Length)
{
workingMarkup = workingMarkup.Substring(index, length);
}
if (element != null)
{
element.Content.Add(workingMarkup);
}
}
/// <summary>
/// A Static Method that takes a MarkupDocument and a markup string and loads in the document the parsed string
/// Here I use regular expressions for parsing the documents like retrieving the element name the attributes etc.
/// </summary>
public static void ParseString(MarkupDocument document, string markup)
{
List<string> result = new List<string>();
document.ChildElements.Clear();
Regex r;
Match m;
string[] markups = markup.Split('<');
MarkupElement parentElement = null;
foreach (string str in markups)
{
string workingMarkup = str;
if (str.Trim().Length == 0)
continue;
#region Closing Tag
//Check if this is a closing element or not
if (workingMarkup.TrimStart().StartsWith("/"))
{
//Check if a parent element exists or not
if (parentElement != null)
{
//Navigate up one level
if (document.IsSpecial(workingMarkup,">",1))
{
document.InsertContent(parentElement, workingMarkup, ">", 1);
continue;
}
parentElement = parentElement.ParentElement;
//Insert Markup in the parentElement content
document.InsertContent(parentElement, workingMarkup, ">", 1);
}
else
{
if (document.IsSpecial(workingMarkup, ">", 1))
{
document.InsertContent(workingMarkup, ">", 1);
continue;
}
//Adding an Element in case a closing tag in the beginning o the document
#region Adding The Element
r = new Regex("^\\s*\\w*", RegexOptions.IgnoreCase | RegexOptions.Compiled);
m = r.Match(workingMarkup);
if (m.Success && m.Groups[0].Value.Trim().Length > 0)
{
MarkupElement initElement = new MarkupElement();
initElement.ParentElement = parentElement;
initElement.Name = m.Groups[0].Value;
initElement.Document = document;
initElement.IsSelfClosed = true;
document.ChildElements.Add(initElement);
}
#endregion
//Insert Markup in the document content
document.InsertContent(workingMarkup, ">", 1);
}
continue;
}
#endregion
MarkupElement currentElement = new MarkupElement();
currentElement.Document = document;
#region Element Name
currentElement.ParentElement = parentElement;
//This regular expression will extract the element name from the tag.
r = new Regex("^\\s*\\w*", RegexOptions.IgnoreCase | RegexOptions.Compiled);
m = r.Match(workingMarkup);
if (m.Success && m.Groups[0].Value.Trim().Length > 0)
currentElement.Name = m.Groups[0].Value;
else
continue;
workingMarkup = workingMarkup.Replace(currentElement.Name, "");
#endregion
#region Retrieve Element Attributes
//This regular expression will extract an attribute with its value at a time
r = new Regex("\\S*\\s*=\\s*\\S*(?:\"(?<1>[^\"]*)\"|(?<1>\\S+))", RegexOptions.IgnoreCase | RegexOptions.Compiled);
for (m = r.Match(workingMarkup); m.Success; m = m.NextMatch())
{
string tag = m.Groups[0].Value;
string[] tagSplit = tag.Split('=');
MarkupAttribute attribute = new MarkupAttribute();
attribute.Name = tagSplit[0];
attribute.Value = tagSplit[1];
currentElement.Attributes.Add(attribute);
}
#endregion
//Setting the element parent
currentElement.ParentElement = parentElement;
#region Add Element
if (parentElement == null)
document.ChildElements.Add(currentElement);
else
parentElement.ChildElements.Add(currentElement);
#endregion
#region Add Content
if (!str.Contains("/>"))
{
if (!document.SpecialElements.Contains(currentElement.Name))
{
parentElement = currentElement;
document.InsertContent(currentElement, workingMarkup, ">", 1);
}
else if (parentElement != null)
{
document.InsertContent(parentElement, workingMarkup, ">", 1);
}
else
{
document.InsertContent(workingMarkup, ">", 1);
}
}
else
{
currentElement.IsSelfClosed = true;
document.InsertContent(parentElement, workingMarkup, "/>", 2);
}
#endregion
}
}
/// <summary>
/// Insert Content in a MarkupElement after removing the tag
/// </summary>
private void InsertContent(MarkupElement element, string workingMarkup, string close, int pass)
{
int index = workingMarkup.IndexOf(close) + pass;
int length = workingMarkup.Length - index;
if (index > -1 && (length + index) <= workingMarkup.Length)
workingMarkup = workingMarkup.Substring(index, length);
if (element != null)
element.Content.Add(workingMarkup);
}
/// <summary>
/// A Static Method that takes a MarkupDocument and a markup string and loads in the document the parsed string
/// Here I use regular expressions for parsing the documents like retrieving the element name the attributes etc.
/// </summary>
public static void ParseString(MarkupDocument document, string markup)
{
List <string> result = new List <string>();
document.ChildElements.Clear();
Regex r;
Match m;
string[] markups = markup.Split('<');
MarkupElement parentElement = null;
int markupCounter = 0;
foreach (string str in markups)
{
string workingMarkup = str;
if (str.Trim().Length == 0)
{
continue;
}
#region Closing Tag
//Check if this is a closing element or not
if (workingMarkup.TrimStart().StartsWith("/"))
{
//Check if a parent element exists or not
if (parentElement != null)
{
//Navigate up one level
if (document.IsSpecial(workingMarkup, ">", 1))
{
document.InsertContent(parentElement, workingMarkup, ">", 1);
continue;
}
parentElement = parentElement.ParentElement;
//Insert Markup in the parentElement content
document.InsertContent(parentElement, workingMarkup, ">", 1);
}
else
{
if (document.IsSpecial(workingMarkup, ">", 1))
{
document.InsertContent(workingMarkup, ">", 1);
continue;
}
//Adding an Element in case a closing tag in the beginning o the document
#region Adding The Element
r = new Regex("^\\s*\\w*", RegexOptions.IgnoreCase | RegexOptions.Compiled);
m = r.Match(workingMarkup);
if (m.Success && m.Groups[0].Value.Trim().Length > 0)
{
MarkupElement initElement = new MarkupElement();
initElement.ParentElement = parentElement;
initElement.Name = m.Groups[0].Value;
initElement.Document = document;
initElement.IsSelfClosed = true;
document.ChildElements.Add(initElement);
}
#endregion
//Insert Markup in the document content
document.InsertContent(workingMarkup, ">", 1);
}
continue;
}
#endregion
MarkupElement currentElement = new MarkupElement();
currentElement.Document = document;
#region Element Name
currentElement.ParentElement = parentElement;
//This regular expression will extract the element name from the tag.
r = new Regex("^\\s*\\w*", RegexOptions.IgnoreCase | RegexOptions.Compiled);
m = r.Match(workingMarkup);
if (m.Success && m.Groups[0].Value.Trim().Length > 0)
{
currentElement.Name = m.Groups[0].Value;
workingMarkup = workingMarkup.TrimStart(' ');
}
else
{
continue;
}
if (currentElement.Name != "")
{
workingMarkup = workingMarkup.Substring(currentElement.Name.Length, (workingMarkup.Length - currentElement.Name.Length));
}
else
{
workingMarkup = workingMarkup.Replace(currentElement.Name, "");
}
#endregion
#region Retrieve Element Attributes
//This regular expression will extract an attribute with its value at a time
workingMarkup = workingMarkup.Replace("\"", "");
workingMarkup = workingMarkup.Replace("'", "");
r = new Regex("(\\S+)=[\"']?((?:.(?![\"']?\\s+(?:\\S+)=|[>\"']))+.)[\"']?", RegexOptions.IgnoreCase | RegexOptions.Compiled);
//new Regex("\\S*\\s*=\\s*\\S*(?:\"(?<1>[^\"]*)\"|(?<1>\\S+))", RegexOptions.IgnoreCase | RegexOptions.Compiled);
for (m = r.Match(workingMarkup); m.Success; m = m.NextMatch())
{
string tag = m.Groups[0].Value;
string[] tagSplit = tag.Split('=');
MarkupAttribute attribute = new MarkupAttribute();
attribute.Name = tagSplit[0];
attribute.Value = tagSplit[1];
currentElement.Attributes.Add(attribute);
}
#endregion
//Setting the element parent
currentElement.ParentElement = parentElement;
#region Add Element
if (parentElement == null)
{
document.ChildElements.Add(currentElement);
}
else
{
parentElement.ChildElements.Add(currentElement);
}
#endregion
#region Add Content
if (!str.Contains("/>"))
{
if (!document.SpecialElements.Contains(currentElement.Name))
{
parentElement = currentElement;
document.InsertContent(currentElement, workingMarkup, ">", 1);
}
else if (parentElement != null)
{
document.InsertContent(parentElement, workingMarkup, ">", 1);
}
else
{
document.InsertContent(workingMarkup, ">", 1);
}
}
else
{
currentElement.IsSelfClosed = true;
document.InsertContent(parentElement, workingMarkup, "/>", 2);
}
#endregion
markupCounter++;
}
}